The app is really good for managing allowances! The only problem is that you cannot set different amounts of spends if youre on the weekend or on a weekday (so it calculates differently the amount to be spent depending on the day youre in) and you cant set a certain amount to be necessarily saved, so that the app doesnt "let" you spend that amount on your daily spends when in calculates the permitted amount to be spent.
h.trindade about Spend Today - Save Tomorrow! (simple daily planner)